I was in one today for the first time since my son's were having a swimming lesson there. It was really nice - so much nicer than our local leisure centre (which is old victorian and grotty). So I asked about membership. They do an offpeak membership for £40 a month (this is central London). I thought it would be great to take the boys swimming there once a week and maybe go myself at the weekend when dh can look after them. Am I mad to consider it when there is a leisure centre within walking distace?